Regression-Discontinuity Design - Institute for Policy Research

Wong, V., Cook, Barnett, & Jung (2008)
State Pre‐Kindergarten Example
• In this example, we were particularly concerned
about two issues: (1) functional form assumptions
and (2) overrides to the cutoff:
• Study Design
– Pre‐K available by birth date cutoff in 38 states, here scaled
as 0 (zero)
– 5 chosen for study and summed here
– How does pre‐K affect PPVT (vocabulary) and print
awareness (pre‐reading)